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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-watchdog.sh 2864 2020-10-18 09:06:17Z rexy $
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# $Id: alcasar-watchdog.sh 2871 2020-10-28 18:17:44Z rexy $
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# alcasar-watchdog.sh
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# alcasar-watchdog.sh
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# by Rexy
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# by Rexy
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# This script is distributed under the Gnu General Public License (GPL)
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# This script is distributed under the Gnu General Public License (GPL)
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# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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				then
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				then
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				LAN_DOWN="2"
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				LAN_DOWN="2"
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			fi
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			fi
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		fi
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		fi
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	fi
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	fi
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	# DNS request testing
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	# DNS request testing (twice)
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	if [ $LAN_DOWN -eq "0" ]
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	if [ $LAN_DOWN -eq "0" ]
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		then
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		then
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			dns_reply=`/usr/bin/host -W1 free.fr|grep SERVFAIL|wc -l`
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			dns_reply=`/usr/bin/host -W1 www.free.fr|grep SERVFAIL|wc -l`
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			if [ $dns_reply -eq "1" ]
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			if [ $dns_reply -eq "1" ]
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				then
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				then
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				dns_reply=`/usr/bin/host -W1 www.startpage.com|grep SERVFAIL|wc -l`
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				if [ $dns_reply -eq "1" ]
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				LAN_DOWN="3"
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					then LAN_DOWN="3"
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				fi
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			fi
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			fi
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	fi
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	fi
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	# if LAN pb detected, users are warned
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	# if LAN pb detected, users are warned
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	if [ $LAN_DOWN != "0" ]
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	if [ $LAN_DOWN != "0" ]
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		then
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		then